The Syllable project is pleased to announce that the reports of its death have been greatly exaggerated, and that the new version 0.4 of Syllable Server has been released. This release focuses on maturing existing functionality, improving security, ongoing system restructuring, and making the system a suitable base for third-party package managers. Although the project admits it hasn't brought its unicorn factory online yet, extensive work was done on the nitty-gritty, so the full change log is quite long.

You're right about the window management: it should be much better and solve the problem that tabbing was introduced for. I've always advocated for a tiling window manager, but this is one of those things that are hard to get off the ground.